Re: [PATCH v2 00/51] migration patches for VFIO

[Juan Quintela <quintela@redhat.com>]

Juan Quintela <quintela@redhat.com> wrote:
> Hi

Nack myself

This patch series should be sent against my next-8.0 branch, not master.

Sorry for the noise.

Will resend.

>
> On this v2:
>
> - Remove the stop of the guest to calculate the size
> - Rebase on latest upstream.
>
> Please review.
>
> [v1/RFC]
> VFIO migration has several requirements:
> - the size of the state is only known when the guest is stopped
> - they need to send possible lots of data.
>
> this series only address the 1st set of problems.
>
> What they do:
> - res_compatible parameter was not used anywhere, just add that information to res_postcopy.
> - Remove QEMUFILE parameter from save_live_pending
> - Split save_live_pending into
>   * save_pending_estimate(): the pending state size without trying too hard
>   * save_pending_exact(): the real pending state size, it is called with the guest stopped.
> - Now save_pending_* don't need the threshold parameter
> - HACK a way to stop the guest before moving there.
>
> ToDo:
> - autoconverge test is broken, no real clue why, but it is possible that the test is wrong.
>
> - Make an artifact to be able to send massive amount of data in the save state stage (probably more multifd channels).
>
> - Be able to not having to start the guest between cheking the state pending size and migration_completion().
>
> Please review.
>
> Thanks, Juan.
>
> Alex Bennée (4):
>   tests/qtests: override "force-legacy" for gpio virtio-mmio tests
>   hw/virtio: add started_vu status field to vhost-user-gpio
>   hw/virtio: generalise CHR_EVENT_CLOSED handling
>   include/hw: VM state takes precedence in virtio_device_should_start
>
> Evgeny Ermakov (2):
>   target/arm: Set TCGCPUOps.restore_state_to_opc for v7m
>   hw/display/next-fb: Fix comment typo
>
> Gerd Hoffmann (2):
>   update seabios source from 1.16.0 to 1.16.1
>   update seabios binaries to 1.16.1
>
> Juan Quintela (9):
>   multifd: Create page_size fields into both MultiFD{Recv,Send}Params
>   multifd: Create page_count fields into both MultiFD{Recv,Send}Params
>   migration: Export ram_transferred_ram()
>   migration: Export ram_release_page()
>   migration: Remove res_compatible parameter
>   migration: No save_live_pending() method uses the QEMUFile parameter
>   migration: Split save_live_pending() into state_pending_*
>   migration: Remove unused threshold_size parameter
>   migration: simplify migration_iteration_run()
>
> Klaus Jensen (5):
>   hw/nvme: fix aio cancel in format
>   hw/nvme: fix aio cancel in flush
>   hw/nvme: fix aio cancel in zone reset
>   hw/nvme: fix aio cancel in dsm
>   hw/nvme: remove copy bh scheduling
>
> Paolo Bonzini (1):
>   target/i386: allow MMX instructions with CR4.OSFXSR=0
>
> Peter Xu (15):
>   migration: Take bitmap mutex when completing ram migration
>   migration: Add postcopy_preempt_active()
>   migration: Cleanup xbzrle zero page cache update logic
>   migration: Trivial cleanup save_page_header() on same block check
>   migration: Remove RAMState.f references in compression code
>   migration: Yield bitmap_mutex properly when sending/sleeping
>   migration: Use atomic ops properly for page accountings
>   migration: Teach PSS about host page
>   migration: Introduce pss_channel
>   migration: Add pss_init()
>   migration: Make PageSearchStatus part of RAMState
>   migration: Move last_sent_block into PageSearchStatus
>   migration: Send requested page directly in rp-return thread
>   migration: Remove old preempt code around state maintainance
>   migration: Drop rs->f
>
> Philippe Mathieu-Daudé (5):
>   hw/display/qxl: Have qxl_log_command Return early if no log_cmd
>     handler
>   hw/display/qxl: Document qxl_phys2virt()
>   hw/display/qxl: Pass requested buffer size to qxl_phys2virt()
>   hw/display/qxl: Avoid buffer overrun in qxl_phys2virt (CVE-2022-4144)
>   hw/display/qxl: Assert memory slot fits in preallocated MemoryRegion
>
> Richard Henderson (2):
>   replay: Fix declaration of replay_read_next_clock
>   target/i386: Always completely initialize TranslateFault
>
> Stefan Hajnoczi (2):
>   block-backend: avoid bdrv_unregister_buf() NULL pointer deref
>   Update VERSION for v7.2.0-rc3
>
> Stefano Garzarella (1):
>   vhost: enable vrings in vhost_dev_start() for vhost-user devices
>
> Thomas Huth (2):
>   tests/qtest/migration-test: Fix unlink error and memory leaks
>   target/s390x/tcg: Fix and improve the SACF instruction
>
> Xiaojuan Yang (1):
>   hw/loongarch/virt: Add cfi01 pflash device